2.4.19 xfs oops report

[jia mei <pagelaunder@xxxxxxxxxxxx>]

Hi xfs-gurus,

XFS always oops in my stress testing, which is very
simple: I just upload a large number of small files
from 4 clients connecting server with gigabit switch.
oops happens within around 6 hours or so. 

Sep 28 16:30:56 c100 kernel: Unable to handle kernel
NULL pointer dereference at virtual address 000
0001b
Sep 28 16:30:56 c100 kernel:  printing eip:
Sep 28 16:30:56 c100 kernel: c012e1d7
Sep 28 16:30:56 c100 kernel: *pde = 00000000
Sep 28 16:30:56 c100 kernel: Oops: 0000
Sep 28 16:30:56 c100 kernel: CPU:    0
Sep 28 16:30:56 c100 kernel: EIP:   
0010:[unlock_page+7/112]    Tainted: P
Sep 28 16:30:56 c100 kernel: EIP:    0010:[<c012e1d7>]
   Tainted: P
Sep 28 16:30:56 c100 kernel: EFLAGS: 00010297
Sep 28 16:30:56 c100 kernel: eax: 00000000   ebx:
00000000   ecx: c03214a0   edx: 00000000
Sep 28 16:30:56 c100 kernel: esi: 00000000   edi:
c9ce23e0   ebp: f5f35798   esp: f5f35790
Sep 28 16:30:56 c100 kernel: ds: 0018   es: 0018   ss:
0018
Sep 28 16:30:56 c100 kernel: Process nfsd (pid: 1073,
stackpage=f5f35000)
Sep 28 16:30:56 c100 kernel: Stack: 000c003c 00000000
f5f357d8 f9a41d10 c9ce23e0 c9ce23e0 20024211 0
0000000
Sep 28 16:30:56 c100 kernel:        000c003c 00000000
00001000 00000001 00000000 fffffff4 ffffffff 0
0000000
Sep 28 16:30:56 c100 kernel:        000c003d 00000001
f5f357f8 f9a4217e c9ce23e0 f5fd6ab4 20024211 0
06001e0

the "Tainted: P" is because we must use the e1000
driver from Intel.

kdb trace is:

unlock_page
_pagebuf_lookup_pages
pagebuf_get
pagebuf_readahead
xfs_dir2_leaf_getdents
xfs_dir2_getdents
linvfs_readdir
vfs_readdir
nfsd_get_name
splice
nfsd_get_dentry
inet_sendmsg
svc_process
nfsd
kernel_thread

we use 2002-09-16 snapshot of CVS code. kernel
2.4.19.

#gcc -v
Reading specs from
/usr/lib/gcc-lib/i386-glibc21-linux/egcs-2.91.66/specs
gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2
release)

did anyone experienced the same oops? Now I can
reproduce it. If need anymore information, I'd
like to provide.

thanks.

--
Joe

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